RU2597236C1 - Device for protection of power extension cable in well - Google Patents

Abstract

FIELD: oil industry.

SUBSTANCE: invention relates to oil and gas industry and can be used for protection of power cable of pump from mechanical damage. Device comprises a two-component housing, a detachable tool joint with fastening elements and a protective screen. Housing consists of pivotally coupled housing and bracket, interconnected by hinged bolt and adjusting screw, screwed into housing and connected to bracket by axis. Adjusting screw may be regulated axially due to screwing in/out into/from housing when diameter of pump neck changes. Detachable tool joint is made as a hinged bolt and a hold-down nut, with uncontrolled screwing lock washer. Furthermore, housing on one side is equipped with grooves D_oc1 and D_oc2 for landing on different-size pump bases or housing of hydraulic protection, on other side - slot b₃, support plane B1 and four bosses b₁, b₂, b₃ and b₄, as well as grooves D_F1, D_F2 and D_F3 for landing on different-size flanges heads of electric centrifugal pumps. Slot, support plane and bosses are made on special lugs of housing having thickness cl.

EFFECT: technical result is improved reliability of protectolizer fixation at pump neck, improved versatility of device.

1 cl, 9 dwg

Description

The invention relates to the oil and gas industry and can be used to protect the pump power cable from mechanical damage during descent - lifting the suspension of tubing with the installation of an electric centrifugal pump in vertical, directional and horizontal wells.

Known protectorizer to protect the power cable extension in the well (see Patent for the invention of the Russian Federation No. 2558096, CL EV 17/10. Publ. July 27, 2015), containing a two-part case, detachable locking connection with fasteners and a protective screen. The housing consists of a hinged housing and a bracket. The housing and the protector of the protector are interconnected by a hinged bolt and an adjusting screw screwed into the housing and connected to the bracket via an axis. The adjusting screw has the possibility of axial regulation by screwing into the housing or twisting out of it in case of changing the diameter of the pump neck. The detachable locking connection is made in the form of a hinged bolt and a clamping nut, equipped with an uncontrolled make-up lock washer.

The reasons that impede the achievement of the technical result indicated below when using the known device include the fact that the known device can only be fixed on tubing of the same size. While in practice, the flanges of the heads of electric centrifugal pumps (ESP) have different sizes (for example, 103 mm or 108 mm). In addition, in the known device, the prevention of its rotation around the axis of the tubing is carried out due to friction by tightening the hinged bolt. However, during operation, due to vibration, the hinged bolt is weakened and a known device is displaced around or along the axis of the tubing, which leads to damage to the pump power cable.

The essence of the proposed protectorizer to protect the power extension cable in the well is that the housing is equipped on one side with recesses D _oc1 and D _oc2 for landing on different sized pump bases or hydroprotection housings, and on the other hand, with groove b ₃ , the reference plane B1 and four bosses b _1, b _2, b ₃ and b ₄ and recesses D _F1, D _F2 and D _F3 to board the different sized flanges heads electric centrifugal pump, the groove, the reference plane and a lug carried on special tides thick cl.

The use of the invention provides the following technical result:

- improving the reliability of mounting the protector on the pump neck;

- increasing the versatility of the device.

The specified technical result in the implementation of the invention is achieved by the fact that the proposed device contains a two-part case, a detachable lock connection with fasteners and a protective screen, the case consists of a hinged housing and a bracket, the case and the protector protector are interconnected by a hinged bolt and an adjusting screw, screwed into the housing and connected to the bracket via an axis, the adjustment screw has the possibility of axial regulation by screwing into the housing or unscrewed In case of a change in the diameter of the pump neck, the detachable locking connection is made in the form of a hinged bolt and a clamping nut equipped with an uncontrolled make-up lock washer.

The peculiarity lies in the fact that the casing is equipped on one side with recesses D _oc1 and D _oc2 for landing on different sized pump bases or hydroprotection casing, and on the other hand, with groove b ₃ , supporting plane B1 and four bosses b ₁ , b ₂ , b ₃ and b ₄ and recesses D _F1, D _F2 and D _F3 for landing on various sized heads flanges electric centrifugal pump, the groove, the reference plane and a lug carried on special housing tides thickness cl.

The analysis of the prior art by the applicant, including a search by patents and scientific and technical sources of information and identification of sources containing information about analogues of the claimed invention, allowed to establish that the applicant did not find an analogue characterized by features identical to all the essential features of the claimed invention. The definition from the list of identified analogues of the prototype, as the closest in the set of essential features of the analogue, allowed to identify the set of essential distinguishing features in relation to the applicant's technical result in the claimed invention set forth in the claims.

Therefore, the claimed invention meets the condition of "novelty."

The construction of the invention is shown in FIG. 1-9.

FIG. 1 is a side view.

FIG. 2 - view B.

FIG. 3 - section AA (in assembled form).

FIG. 4 - section BB.

FIG. 5 - section CC (basing option for ESP flanges).

FIG. 6 - section CC (option based on the flanges of hydraulic protection).

FIG. 7 - section DD.

FIG. 8 - section EE.

FIG. 9 - section AA (disassembled with folded bracket and clamp bracket).

The protectorizer consists of: housing 1 and bracket 2, clamping bracket 3, hinged bolt 4, nut 5, screw-axis 6 of rotation of the bracket and hinged bolt, adjusting bolt 7, lock washer 8, screw 9 for adjusting the clamp, cable 10 ESP, screw clamping 11, lock washer 12, axis 13.

Designations:

- b ₁ , b ₂ - variable (adjustable) gaps between the housing and the bracket;

- b ₃ - the width of the groove in the protectorizer housing for fixing the ESP from circular displacement around the axis;

- D _oc1 and D _oc2 sizes of grooves for landing on different sized pump bases or hydroprotection housings;

- B1 - reference plane for basing the ESP;

- b ₁ , b ₂ , b ₃ and b ₄ bosses for basing the ESP flange;

- D _f1 , D _f2 and D _f3 grooves for landing on different-sized flanges of ESP heads;

- D _W - the diameter of the neck of the base (pump or hydraulic protection);

- S _ш - a hexagonal neck (inscribed diameter of the neck of the base (pump or hydroprotection));

- cl is the thickness of the special tides of the protectorizer body;

- D _VN - the outer diameter of the protector with the base;

- h is the thickness of the electric cable ESP;

- H1 - distance from the bottom plane of the cable to the center of the flange (base) for 5 dimensions (46 mm);

- H2 - the distance from the lower plane of the cable to the center of the flange (base) for 5 A overall (51.5 mm);

- H3 - distance to the groove under the diameter of the ESP flange (max = 114 mm);

- Н4 - the distance from the lower plane of the cable to the reference plane B1 (constant value for pumps 5 and 5A dimension (25 mm)).

Protectolizer works as follows. The power cable 10 is inserted into the seat of the housing 1, having previously selected the thickness h by adjusting this size with screw 9 (see Fig. 3). Then the presser bracket 3 fixed power cable in the seat with clamping screw 11. Then the inner protektolayzera adjust its size based on the base of the pump housing or the seal section diameter D _oc1 and flange of the pump casing or seal section diameter D _F1, or to the base of the pump housing or hydroprotection with a diameter D _os2 and on the flange of the pump casing or hydroprotection with a diameter D _f2 by adjusting sizes b ₁ and b _{2 with an} adjusting bolt 7 and a hinged bolt 3. At the same time, the neck of the pump or hydroprotection D _w ( round) or hexagon S _w is based on two flat stops of the bracket 2. In addition, the elements of the pump casing are fixed in the groove b ₃ of the protectorizer housing, thereby preventing circular movement of the protectorizer around the axis and the basing of the elements of the pump housing on the reference plane B1 to prevent lateral displacement of the protectorizer .

After the final selection of the adjusting dimensions of the protectorizer and its basing on the neck of the pump or hydroprotection, the protectorizer is finally fixed using the hinged bolt 4 and nut 5.

Thus, the equipment body 1 by special landing recesses D _oc1 and D _a2 and D _F1, D _F2 and D _F3 allows base protektolayzery on the pump housing or the seal section with a different diameter for landing on different sized flanges ESP heads, thereby enhancing device versatility .

The presence in the housing 1 of the groove b ₃ and the reference plane B1 prevent circular displacement of the protectorizer around the axis and its transverse displacement, thereby increasing the reliability of fastening the protectorizer to the pump neck.

Thus, the foregoing description indicates the fulfillment of the following set of conditions when using the claimed invention:

- a tool embodying the claimed invention, in its implementation is intended for the oil and gas industry and can be used to protect the pump power cable from mechanical damage during descent - lifting the suspension of tubing with the installation of an electric centrifugal pump in vertical, directional and horizontal wells;

- for the claimed method in the form as described in the claims, the possibility of its implementation using the means and methods described in the application is confirmed;

- a tool embodying the claimed invention in the implementation, is able to ensure the achievement of the perceived by the applicant of the assigned technical tasks. Therefore, the claimed invention meets the condition of "industrial applicability".

Claims (1)

Protectolizer for protecting a power extension cable in the well, comprising a two-part case, a detachable lock connection with fasteners and a protective screen, the case consists of a body and bracket pivotally interconnected, the case and the protectorizer bracket are interconnected by a hinged bolt and an adjusting screw screwed into the housing and connected to the bracket through the axis, the adjusting screw has the possibility of axial adjustment by screwing into the housing or twisting out of it in case of changing the diameter of the necks pump ki, a detachable locking connection is made in the form of a hinged bolt and a clamping nut, equipped with an uncontrolled make-up lock washer, characterized in that the casing is equipped on one side with recesses D _oc1 and D _oc2 for fitting on different sized pump bases or hydraulic protection housings, and on the other hand - the groove b _3, a reference plane B1 and four bosses b _1, b _2, b ₃ and b ₄ and recesses D _F1, D _F2 and D _F3 to board the different sized flanges heads electric centrifugal pump, wherein groove, support planes and boss and are performed on special tides of the c1 thickness.

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